Comparison ready

2 robots selected.

The comparison cards start below. Open the editor only when you need to swap the shortlist.

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W1 Stretch 4
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294 robots 9 categories 126 priced

Comparing 2 robots

Green cells flag numeric leaders, while AI, sensors, and capability rows keep the real buying tradeoffs visible.

W1Stretch 4
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Swipe through core specs, AI, sensors, connectivity, and capability notes.
W1
W1 Zeroth Robotics
  • Price $4,999 USD
  • Weight 28kg (61.7 lbs)
  • Battery Life Up to 25 hours standby
  • Max Speed 0.1-1m/s on flat surfaces; 0.5m/s on slopes
  • AI 8-core Horizon Sunrise Series CPU with onboard autonomous navigation and perception stack
  • Sensors LiDAR, 13MP RGB camera (shooting), 2MP RGB camera (monitoring), RGBD depth camera, Ultrasonic sensor, Human infrared sensor, GPS, Beidou
  • Connectivity Dual-band Wi-Fi 6, Bluetooth 5.2, 4G, USB-C (60-120W output), USB-A (18W output)
  • Status Available
  • Category Home Assistants

Capabilities

Autonomous followingItem transportOutdoor terrain navigationAutonomous patrol +6 more
ST
Stretch 4 Hello Robot
  • Price $29,950 USD
  • Weight 46kg (33kg with ballast removed for transport)
  • Battery Life 8 hours (light CPU load)
  • Max Speed Not officially disclosed
  • AI Open-source ROS 2 and Python SDK with reference autonomy demos for mapping, navigation, 3D SLAM, data collection, and VLM grasping; IEEE Spectrum reports Intel NUC 15 plus NVIDIA Jetson Orin NX onboard compute.
  • Sensors Wide-FOV depth sensing, High-resolution RGB cameras, Calibrated RGB + depth perception, Floor hazard sensing, Pair of hemispherical LiDARs, Luxonis vision/navigation cameras, Wrist-mounted depth camera
  • Connectivity
  • Status Available
  • Category Home Assistants

Capabilities

Mobile ManipulationOmnidirectional Indoor MobilityAutonomous Mapping and Navigation3D SLAM +7 more

How to Compare Robots

Use this flow to get to a clean shortlist fast. The route works best as a dense research workbench, not a marketing page.

1

Choose comparable robots

Start with robots that solve the same job. Use category anchors like Humanoid, Cleaning, Companions, Commercial before you worry about micro-spec wins.

2

Read the big deltas first

Check price, status, battery, sensors, and capabilities before getting lost in minor spec rows.

3

Switch to differences only

Once you have a shortlist, hide shared rows. That turns the table from a spec dump into a real decision tool.

Cross-category comparisons still have value

A dedicated cleaner versus a home assistant with cleaning features can reveal whether you really need a specialist or just broader household coverage. Compare around the same outcome, not the same marketing language.

Live quick-start comparisons

Use a prebuilt pairing when blank-page friction is the problem. Open one, swap robots, and keep moving.

Budget vs premium cleaning

Price bracket check — N1 versus AquaSense X shows what the premium tier actually buys in navigation, maintenance, and smart-home polish.

NEURA Robotics tier jump

Same-brand shortlist — MiPA versus 4NE-1 isolates whether the higher tier actually changes the ownership story.

Robot dog showdown

Mobility platforms — Go2 versus D1 Pro is a fast way to compare payload, stability, and commercial ambition inside the quadruped category.

Companion value curve

Home presence check — Miko Mini versus LOVOT reveals how much extra presence, hardware, and ecosystem you buy as companion robots move upmarket.

Making Your Decision

Turn comparison rows into an actual recommendation — not just more reading.

1

Weighted priorities

Not all spec deltas matter equally. Rank your buying criteria before crowning a winner.

  • List must-haves — smart-home platform, clearance, shipping status, or anything that eliminates a robot instantly.
  • Pick your top 3 differentiators — navigation, noise, battery, support, or whatever changes daily use.
  • Score only the finalists against those. The robot that wins your real priorities beats the one with the most green cells.
2

Total cost of ownership

The sticker price is only one row. Subscriptions, consumables, and service access often decide the real winner.

Subscriptions

Cloud AI and premium app tiers can make a cheaper robot more expensive over three years.

Consumables

Brushes, pads, filters, and bags flip the value story on high-frequency robots.

Energy & battery

Large batteries and frequent charging reveal everyday operating demands.

Repair & warranty

Local servicing and spare-parts access are the quietest but most important long-term costs.

3

Environment check

Specs describe ideal conditions. Your rooms, pets, and Wi-Fi determine what actually performs.

  • Floor types — carpet, hardwood, tile, and transition handling.
  • Space layout — open plans vs. multi-room homes with tight doorways.
  • Wi-Fi coverage — cloud-heavy robots need stable signal everywhere.
  • Household — pets, kids, shared spaces, and noise tolerance.

Buy now vs. wait

Of 294 robots tracked, 185 are available now. For household tasks, getting a capable robot into daily use today usually beats waiting for incremental improvements. For research or early-adopter use, waiting can make sense if the next model changes the platform story.

When it's too close to call

If two robots are still neck-and-neck, use softer signals that affect ownership quality more than spec sheets admit.

Return policy User community Ecosystem Aesthetics

Comparison FAQ

Questions buyers ask before the final click

Short answers to the questions that usually show up once the shortlist is live and the tradeoffs feel real.

Frequently Asked Questions

Using the workspace
How many robots can I compare at once?
You can compare up to four robots at once. Two or three is usually the cleanest decision view, but four-way comparisons work well for wider market scans.
What does 'Show differences only' do?
It hides rows where all selected robots share the same value, leaving only the rows that actually change your decision. It is especially useful for same-brand or same-category shortlists.
Can I compare robots from different categories?
Yes. You can compare any of the 294 robots in the database. Cross-category comparisons work best when the robots still compete for the same outcome in your home or workflow.
What makes a good comparison?
The best pairings share at least one real-world anchor: same job, similar price band, same room constraints, or competing brand tier. That keeps the table decision-focused instead of random.
Sharing & shortlisting
How do I share a comparison?
Once you have a live shortlist, a Share this comparison link appears in the workbench. It preserves your selected robots and the differences-only toggle in a permanent URL.
Can I save or bookmark a comparison for later?
Yes. Every live comparison has a stable route, so bookmarking the page preserves the exact configuration you built.
Can I compare by price alone?
Price is one row in the compare table, but if you want pure price sorting first, the all robots page is the better place to shortlist before coming back here.
Data & methodology
Are specifications up to date?
ui44 comparison data is sourced from official manufacturer documentation and re-verified on a rolling basis. Shipping products get the most frequent freshness checks.
What if a spec is missing?
A dash or 'Not specified' usually means the manufacturer has not published the detail clearly. It does not automatically mean the robot lacks the feature.
How should I compare robots at different development stages?
Treat Available and Active robots as the most reliable operational baselines. Development, Announced, or Pre-order rows can still be useful, but they should carry more uncertainty in your decision.
Can I compare specific sensors or components more deeply?
Yes. The compare table gives you the side-by-side overview, then the components directory lets you go deeper on shared sensors, radios, and platform pieces across the catalog.